<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	我成功了 <button onclick="showAlert()">点击一下</button>
	<script>
		function showAlert() {
			alert("是的成功了");
		} 
	
	</script>
</body>
</html>